.TH std::experimental::filesystem::space 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::experimental::filesystem::space \- std::experimental::filesystem::space

.SH Synopsis
   Defined in header <experimental/filesystem>
   space_info space( const path& p );                           (filesystem TS)
   space_info space( const path& p, error_code& ec ) noexcept;

   Determines the information about the filesystem on which the pathname p is located,
   as if by POSIX statvfs.

   Populates and returns an object of type space_info, set from the members of the
   POSIX struct statvfs as follows:

     * space_info.capacity is set as if by f_blocks * f_frsize.
     * space_info.free is set to f_bfree * f_frsize.
     * space_info.available is set to f_bavail * f_frsize.
     * Any member that could not be determined is set to
       static_cast<std::uintmax_t>(-1).

   The non-throwing overload sets all members to static_cast<std::uintmax_t>(-1) on
   error.

.SH Parameters

   p  - path to examine
   ec - out-parameter for error reporting in the non-throwing overload

.SH Return value

   The filesystem information (a space_info object).

.SH Exceptions

   The overload that does not take an error_code& parameter throws filesystem_error on
   underlying OS API errors, constructed with p as the first argument and the OS error
   code as the error code argument. std::bad_alloc may be thrown if memory allocation
   fails. The overload taking an error_code& parameter sets it to the OS API error code
   if an OS API call fails, and executes ec.clear() if no errors occur. This overload
   has
   noexcept specification:
   noexcept


.SH Notes

   space_info.available may be less than space_info.free.

.SH Example


// Run this code

 #include <experimental/filesystem>
 #include <iostream>
 namespace fs = std::experimental::filesystem;

 int main()
 {
     fs::space_info devi = fs::space("/dev/null");
     fs::space_info tmpi = fs::space("/tmp");

     std::cout << "         Capacity         Free    Available\\n"
               << "/dev:   " << devi.capacity << "   "
               << devi.free << "   " << devi.available << '\\n'
               << "/tmp: " << tmpi.capacity << ' '
               << tmpi.free << ' ' << tmpi.available << '\\n';
 }

.SH Possible output:

           Capacity         Free    Available
 /dev:   4175114240   4175110144   4175110144
 /tmp: 420651237376 411962273792 390570749952

.SH See also

   space_info information about free and available space on the filesystem
              \fI(class)\fP

.SH Categories:
     * Noindexed pages
     * unconditionally noexcept
.SH Hidden categories:
     * Pages with unreviewed unconditional noexcept template
     * Pages with unreviewed noexcept template
